23-letter words containing c, o, u
- united states air force — the permanent or regular military air force of the United States, established in 1947 as a separate service under the authority of the Department of Defense: a branch of the U.S. Army before 1947. Abbreviation: USAF.
- unprotected intercourse — an act of sexual intercourse or sodomy performed without the use of a condom thus involving the risk of sexually transmitted diseases
- urban conservation area — an urban area that is protected, preserved and carefully managed
- urinary tract infection — infection of any part of the urinary tract, especially the urethra or bladder, usually caused by a bacterium, Escherichia coli, and often precipitated by increased sexual activity, vaginitis, enlargement of the prostate, or stress. Abbreviation: UTI.
- velocity of circulation — the frequency with which a single unit of currency or the total money supply turns over within the economy in a given year.
- vestibulocochlear nerve — either one of the eight pairs of cranial nerves that supply the cochlea and semicircular canals of the internal ear and contribute to the sense of hearing
- virtual device location — (Or "Virtual Address") The address of a device (e.g. disk, printer, terminal) belonging to a "guest" operating system. Such an address is mapped to a physical device. VM may remap several virtual disks to different parts of a single physical disk.
- viscount horatio nelson — Viscount Horatio, 1758–1805, British admiral.
- viscount melville sound — an arm of the Arctic Ocean between Victoria and Prince of Wales islands to the S and Melville and Bathurst islands to the N, in the Northwest Territories and Nunavut, Canada. 250 miles (400 km) long and 100 miles (160 km) wide.
- volumetric displacement — the volume of air per revolution that passes through a mechanical pump when the pressure at the intake and the exhaust is the same as that of the atmosphere
- water off a duck's back — any of numerous wild or domesticated web-footed swimming birds of the family Anatidae, especially of the genus Anas and allied genera, characterized by abroad, flat bill, short legs, and depressed body.
- weak accumulation point — accumulation point.
- you can't go home again — a novel (1940) by Thomas Wolfe.